Grub¶
Name |
|
Repository |
|
Documentation |
https://docs.debops.org/en/master/ansible/roles/grub/defaults/main.html#grub-configuration-options |
Blacklist a module¶
##########################
# grub
grub__default_configuration:
- name: 'cmdline_linux_default'
value:
- modprobe.blacklist=qla2xxx
Disable predictable network interface names¶
##########################
# grub
grub__default_configuration:
- name: 'cmdline_linux_default'
value:
- net.ifnames=0
- biosdevname=0
Enable IOMMU¶
Intel¶
##########################
# grub
grub__default_configuration:
- name: 'cmdline_linux_default'
value:
- intel_iommu=on
- iommu=pt
AMD¶
##########################
# grub
grub__default_configuration:
- name: 'cmdline_linux_default'
value:
- iommu=pt
Support of Docker capabilities¶
Note
Memory and swap accounting incur an overhead of about 1% of the total available memory and a 10% overall performance degradation, even if Docker is not running.
$ docker info
[...]
WARNING: No swap limit support
This is actual the default in debops grub
https://github.com/debops/debops/blob/master/ansible/roles/grub/defaults/main.yml#L138
##########################
# grub
grub__default_configuration:
- name: 'cmdline_linux_default'
value:
- cgroup_enable=memory
- swapaccount=1